Pot type burner with double baffle structure



2 Sheets-Sheet 1 B. HAYTER Filed March 14, 1942 PUT TYPE BURNER WITH DOUBLE BAFFLE STRUCTURE P /0 ./A 5a Jin- .18 1944- AB. HAYTER I 2,339,637

POT TYPE BURNER WITH DOUBLE BAFFLE STRUCTURE Filed March 14, 1942 2 sheets-sheet 2 '25 26 o-oooooesoQeeeeaee I eeeleeaoeooooao 0 0 K O 0 O 0 0 0 e3 /flo K e I. o o o /a` n l /5a 0 .f ,vo` o'L:l lol o c Patented.lan.vll8,19424 I.

"A UNITED .s 'm'rls's l PATENT Y Y l' i Y' 2,339,637 n I Por TYPE BURNER wrrn DOUBLE STRUCTURE ori-Ica BAFFLE Bruce Hayter, Santa Fe, N. Mex., assigner to Oil Devices, Santa Fe, N. Mex.. a limited partner.-

Vship ol' Illinois Application March 14, 1942, serial No. 434.652

s claims. (cl. s-91) My invention relates to an improvement in pot t in the course of the speciiication.

I illustrate my invention more or less diagrammatically in the accompanying drawings'wherein: l

Fig. 1 is a vertical axial section; i Fig. 2 is a section on the line2-2 ofFig. 1; Fig. 3 is a vertical axial section illustratinga variant form of the device; and f Fig. 4 is a vertical axial section illustrating a V still further variant of the device.

Like parts are indicated by like symbols throughout the specification and drawings.

Referring first to the form of Figs. 1 and 2,

l I generally indicates an outer housing, which may be of any suitable size, shape and proportion,

but which is herein shown as a generally cyline drical drum. It may include or have any suitable supportingmembers 2, which space thev lower edge of the drum above the floor or surfaceupon which the heater is positioned 3 is a lower partition having a central air inlet aperture I. 5

indicates a burner pot which has an outwardly extending top-ilange 8, which may rest upon any suitable annular support 1 inwardly extending from the wall of the housing' I.

8 is any suitable Iuelpipe. the flow of fuel along which may be controlled in any suitable manner, forexample by the float structure generally shown at 9, the details'of which do not form air inlet apertures II are located below'the llame Located below the flame ring lIl is' there-fv circulating ring 21, which, like the lower ,recir s. culating4 ring I1, is of such diameter that there" Part of the present invention., It will be understood that the rate of flow of liquid fuel inward- 1.7 along the pipe 8 to the -bottom of the pot B may be regulated manually or automatically, whereby the desired supply of fuel is delivered to the pot. Preferably the control device is operated so as to maintain at all times at least a minimum flow of fuel suilicient tolmaintain a pilot flame.

'I'he wall o'f the pot 5 is provided with a plurality of primary air inlet apertures I0. Any suitable means may beV provided for providing a secondaryl air supply at or adjacent the top of the pot i. I illustrate, however, a single top row both rings, may be unitarily inserted into or re- .tween of the ring I1.

ofsecondary air inlet apertures II, whichare `preferably upwardly andinwardly tilted' and which are larger or more closely lspaced than the primary air inlet apertures I0, or both.

I5 indicates a pilot baille centrally apertured as at I5a and positioned intermediate the upper and lowerprimary inlets I0. I. illustrate it, for example, as located above the lowest row of apertures I0- It-A may be mounted 'on pins li or.A anyother suitable securing means. Positioned below the lowest air inlet apertures II) I provide a supplemental or recirculating ring I1, the outerl edge of which is spaced inwardly, as at I8, a substantial distance from the opposed inner wall, of the pot 5. The baille I1 has a central aperture I9 axially aligned with the central aperture lia of the pilot baille I5, and is herein shown as yof somewhat greater diameter. The baille I1 is Y preferably supported upon or'suspended from the baille I5, for example by bolts 2l and spacing:` sleeves 2| Thus the pilot structure, including moved-from the pot. The pins' II may be oi' 'suoli length as to permit Located at the top 4of the erture 2B. It will be observed that the secondary is a substantial gap between its outer edge 18 and the inner face of the pot 5'. ,It may be' suspended from or mounted on the ilame ring. Il.

as by bolts 29 and spacing sleeves",l so ythat it may also be removed from the pot'unitarily with the ame ring 25. y Y

As shown in Fig. 3, the upper'recirculating ring 1 21 may be omitted, and the llame ring 2B is shown as without any depending supporting structure.

AReferring to Fig. 4, I illustrate a variant form of the device in which in the pot 5a a singlerow of primary air inlets I Ila is employed, and a single 'row of secondary air inlets I Ia. The pilot struc- .ture, which may be identical with that shown in Fig. 1 and is similarly numbered, is located yat the level of the single row oi primary air inv lets I Ila, the pilot I5 being above that row and the recirculating ring I1 being below it. Similarly, the name ring 25 andthe reclrculating ring 21 are located, respectively, above andbelow the secondary air inlet apertures I Ia.

'Thestructure of Figures 3 and 4. may be used with a housing and valve as shown by Figure l.

the ready passagetherebe- Y.

pot l and partituur f closing it is ailame ring 2i having a `central ap- -A 'tion.f 1therefore wishmy 'zingato'be'taken'asin a or diagrammatic, rather andat the top at the air from the apertures il y v that the burner of any of the -by the heat of the pot. At the pilot stage the combustion is A'is directed inwardly throughthe apertures I wardly toward cent the level of The burner is theprimarymixture -outwardly in thev size. without departing from description and `drawilhistrative than as limiting meto pot, I mean the open mouth of the pot. When I speak of one the term in relation tothe relativeA distance of the various parts from the open mouth of the The use and operation of my, invention are as follows:

All the forms of the present the upper ring. Thus, 21 is suspended from 28,' and i1 from Ii. It will be understood that in the form of either Figs. 1 or 4, the double ring can be used either at the top or at the pilot stage, or at both. In Fig. 1 I illustrate it located both at the pilot stage either form f the high stage or at the low stage, or at'both.

V The rings I1' and 21 each serves a recirculating and the gases circulate upwardly about function,

ring in response to'or in the outer edge of each association with the inwardly directed iets of or Il, or ila or ila.

Each element is in fact a return gas system.

aasaeav shapanunmer and disposition of parts the spirit of my invelifr.4

part being below another, I use' acentrally apertured recirculatlng 16 device illustrate' the multiple ring or baille structures including an upper ring and a lower ring, which may for con venience be suspended from higher re stage. In Illg. 3 it is located only at the pilot stage. It will be understood, however, that withl spot, the recirculating ring may be employed at In the operation of the device. and assuming figures is burning at the pilot stage, the relatively small amount of fuel delivered by the passages is vaporized combustion going on above taking place at or near the level of the pilot ring i5; The primary air supply for the pilot :im a plurality of jets which extend substantially inthe center of the pot.' These iets of -fresh air entrainand carry on with them a primary mixture of airand vaporised fuel, which it in of the pot, the wall `all' inlet apertures 'B -gasesatthepilot 1i. In a burner,

a generally cylindrieal-wallwitha plurality ofv air-inlet apertures ,ing liquid fuel yrecirculating ring same is,l of course,

I find -it highly or both, The resultfis stabilized combustion andbettermixingofthefuel, andagreatre.-

duction in the tendency tov form carbon. A quietf erfirelsalso provided. 1

therein. means' for'surnlytrally apertured ring insaid-pot, adjacent said first mentioned ring,A d rings overlapping 'and denning, between the outer diameter of the recirculatlngring being substantiallyless than that of the ilrst mentioned ring, its outer 'edge being spacedsubstantially inwardlyifroni thewallofthepot 2. In a-pot' type a'generally cylindrical wall with plurality of air inlet apertures therein, means for supplying liqiud fuel to the interior of the pot. a centrally apertured ring mounted on .said'pot, and a' cen-y trally apertured recirculating' -ri'ng located in said pot, adjacent said first mentioned ring, said rings overlapping and'deflningrbetween them. a recirculating passage generally perpendicular to the axis of the pot. the outer dlameterof the being substantially less than that of the nrst mentioned ring, its outer edge being spaced substantially inwardly from the wall of the pot, the. pot wall having .air inlet apertures laligned withA and adapted to deliver air into the space vbetween said rings.'

-a generally` cylindrical circumferential wall.4

means for delivering a liquid fuel to the interior of the pot having therein, means for supplyilll secondary air to the mixture formed in said pot. a centrally apertured pilot `ring located in said tures, and a centrally apertured recirculating nows upwardly through the gap .about the exterior of the pilot ring I1, and then wardlyV with and along the iets delivered by the lowest' row aranci-tures4 Il, or by the row of apertures ina. ,Tho ughly mixed air and `vaaperture ilof the pilot ring il, and of Fig. 1 secondary air is provided by the upper apertures l0. In the form of Flg. 4 all of thethrough v`the pi apertures i. ofl'ig. 1' then'provide a primary air'supply fora-mixturewhich receives its secl through .the apertures ii. The re.

the Outer edge 0f inwardly and air to the mixture trally'aperturedpilot ring located in said pot ring located in said pot'below. the'lowest row of said primary air inlet apertures, thaoutside diameter of the recirculating ring being4 smaller than the outside diameter ofthe pilot ring. the outer edge of the recirculating ring being spaced inwardly from the wall of the pot sufncientlyto provide a substantially-circumferential recircu# lating passage therebetween. .v

4. In a pot type burner. aburner 'potiiaving-a generally cylindrical circumferential wall, means' for delivering a liquid fuel to the interior of the; pot, the wall of the pot apertures therein, means formed in said pot, -a canintermediate top and-bottom and above the lowest of the primary air inlet aperturos,.'and

' a centrally apertured recirculating Aring' located takes place at the topof potv upwardly and v the ring I1 by' vdiaxrieter of the below the lowest row of said primary air. inlet apertures, the outside diameter of .the vweim'uiating ring'being smaller than the outside pilot' ring. the outer, edsejof the ii'iwalill!V from the wall ofthe pot'sunlciently to provide-taub. stantially clrcu'mferqitial *n* form of. 4. dllrible to the Win11? mlb lire a burnerpot havingY to the. interior. of the pot, a cen mounted on said. and .l

'a recirculating area generally perpendic' -ular to the axis'ofthe pot.

burner, a burner pot intermediate top and bottom thereon-and above the lowest of the 'primary air inlet aper" having primary air inlet. for supplying .secondary cured to said pilot` ring and being unitarily removable therewith.

5. In a pot type burner, a burner pot having a 'generally cylindricalcircumferential wall, means `for delivering a liquid fuel to the interior of the pot, the wall of the pot having a plurality of' primary air inlet apertures arranged in a single row extending about the pot, `a centrally apertured ring located abpve said row of -holes and a recirculating ring located below said row of holes, the outside diameter of the recirculating ring being less than theA outside diameter of the first mentioned centrally apertured ring, the outer edge of the recirculating ring being spaced inwardly from the wall of the pot `sufciently to, provide a substantially circumferentialrecir` culating Passage therebetween.

6..In,a pot type burner, a burner vpot having a generally cylindrical circumferential wall, means for delivering aviiquid fuel to the interior of the pot,'thewall of thepot having a plurality' of primary air inlet apertures arranged in a single row extending about the p01". a centrally apertured ring located above said row oi.' vholes and a reclrculating ring located below said-row of holes, the outside diameter of the reclrculatlng ring being less than the outside diameter of the iii-st mentioned centrally apertured ring, the outpot. the wall of the pot having plurality of primary air inlet apertures, means for supplying secondary air to the mixture formed in said i pot, including a row of secondary air-inlet fap'ertures located adjacent the top of the pot, a. centrally apertured flame ring partially closing the top of the pot and located above said secondary l airiinlet apertures'and a centrally apertured recirculating ring located below said secondaryx-alr inlet apertures, and having an outside diameterl substantially less thanthat Aof the flame ring, the outer edge of the recirculatng ring being spaced inwardly from the pot wall suiilciently to -provide a `substantially circumferential recircul'ating passage therebetween.

8. In a pot type burner, a burner pot having a generaiy cylindrical circumferential wall, means `for delivering a liquid fuel to the interior of the pot, the wall of the pot having a. plurality of primary air inlet apertures, means for supplying secondary air to the mixture formed in said pot, including arow' of seconda air inlet apertures located adjacent the top of the pot, a centrally er edge of the recirculating ring being spaced i inwardly from -the wall vof the pot sulcientlyl for delivering a liquid fuel to theinterior oi the .apertured name ring partially closing the top of the pot and located above said secondary air inlet apertures and a centrally apertured recriculating ring located belowsaid secondary air inlet apertures, and having an outsidediameter substantially less than' that of the iiame ring, the outer \edge of the recirculating ring being spaced inwardly from the pot wall suiilciently to provide a substantially circumferential recirculating passage therebetween, said reclrculating ring being secured to said name ring and being initiallyremovable therewith. y 1 BRUCE HATIER. 

